Some users of Mac devices running the latest builds of macOS Sequoia and/or macOS Tahoe beta have encountered a frustrating issue where wireless connectivity suddenly disconnects, leaving the device without internet access. This Wi-Fi disconnection problem appears to happen without any clear trigger or identifiable cause, striking at random intervals. Although reconnecting via the menu bar is straightforward, there’s a high chance the same problem will recur after minutes, hours, or even days.

After personally experiencing this on my MacBook Air—multiple times even after updating to the latest macOS Sequoia version (15.5) and later with the newest Tahoe release—I revisited an older but reliable Mac wireless troubleshooting method that effectively resolves the random Wi-Fi dropouts, which we’ll walk through below.

This procedure involves clearing out your wireless and network settings on the Mac, so be aware that you may need to reconfigure custom settings related to DNS, TCP/IP, and other similar preferences.

It's also important to ensure your macOS system software is fully up-to-date (via System Settings > General > Software Update), as updates often address such bugs.

How to Fix Random Wi-Fi Disconnects in macOS Sequoia & Tahoe by Resetting Network Preferences

1. Close all open networking-related applications (web browsers, chat apps, etc.)
2. From the Wi-Fi menu in the top bar, toggle Wi-Fi OFF

3. Launch Finder, then from the "Go" menu, select "Go To Folder" and type the following path: /Library/Preferences/SystemConfiguration/

4. Press Enter to navigate to the SystemConfiguration folder. Locate and move these files to your desktop (this acts as a backup; you can restore them later if needed): com.apple.airport.preferences.plistcom.apple.network.eapolclient.configuration.plistcom.apple.wifi.message-tracer.plistNetworkInterfaces.plistpreferences.plist

5. Restart your Mac using the ? Apple menu, selecting “Restart”

6. Once the system boots back up, go to the Wi-Fi menu and switch Wi-Fi back ON

7. Choose your wireless network from the list and reconnect as usual

8. Finally, open a browser to verify that internet access has been restored

Following these steps should resolve the issue of intermittent Wi-Fi connectivity issues on macOS Sequoia or Tahoe beta.

This isn't the only network-related concern reported for macOS Sequoia and macOS Tahoe. Previously, we covered techniques for addressing Wi-Fi and network problems shortly after Sequoia’s release when many users started encountering various difficulties. If your connection issues persist, it might be worth reviewing that article for additional guidance.

Have you faced unexpected Wi-Fi drops on your Mac while using macOS Sequoia or the beta version of macOS Tahoe? Did this fix work for you, or did you discover another solution? Share your experiences in the comments section below.

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